<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel {

    public $username;
    public $password;
    public $rememberMe;
    public $register = NULL;
    private $_identity;

    /**
     * Declares the validation rules.
     * The rules state that username and password are required,
     * and password needs to be authenticated.
     */
    public function rules() {
        return array(
            // username and password are required
            array('username, password', 'required'),
            // rememberMe needs to be a boolean
            array('rememberMe', 'boolean'),
            // password needs to be authenticated
            array('password', 'authenticate'),
        );
    }

    /**
     * Declares attribute labels.
     */
    public function attributeLabels() {
        return array(
            'rememberMe' => 'Remember me',
        );
    }

    /**
     * Authenticates the password.
     * This is the 'authenticate' validator as declared in rules().
     */
    public function authenticate($attribute, $params) {

        $this->_identity = new UserIdentity($this->username, $this->password);
        if ($this->_identity->authenticate()) {
            Yii::app()->user->login($this->_identity);
        } else {
            switch ($this->_identity->errorCode) {
                case UserIdentity::ERROR_USERNAME_INVALID:
                    $this->addError('username', 'The email address you entered does not belong to any account.');
                    break;
                case UserIdentity::ERROR_PASSWORD_INVALID:
                    $this->addError('password', 'The password you entered is incorrect. Please try again (make sure your caps lock is off).');
                    break;
                default:
                    break;
            }
        }

        /*
          if(!$this->hasErrors())  // we only want to authenticate when no input errors
          {
          $this->_identity=new UserIdentity($this->username,$this->password);
          $this->_identity->authenticate();
          switch($this->_identity->errorCode)
          {
          case UserIdentity::ERROR_USERNAME_INVALID:
          $this->addError('username','Username is incorrect.');
          break;
          case UserIdentity::ERROR_PASSWORD_INVALID:
          $this->addError('password','Password is incorrect.');
          break;
          default:
          break;
          }
          } */
    }

    /**
     * Logs in the user using the given username and password in the model.
     * @return boolean whether login is successful
     */
    public function login() {
        if ($this->_identity === null) {
            $this->_identity = new UserIdentity($this->username, $this->password);
            $this->_identity->authenticate();
        }
        if ($this->_identity->errorCode === UserIdentity::ERROR_NONE) {
            $duration = $this->rememberMe ? 3600 * 24 * 30 : 0; // 30 days
            Yii::app()->user->login($this->_identity, $duration);
            return true;
        }
        else
            return false;
    }

}
